Chapter 12

Question 0

To reach constant velocity you must have a net force of

Answer 0

Zero

Question 1

All objects will get to terminal velocity if

Answer 1

Friction is involved

Question 2

Newton’s second law

Answer 2

A=Net force/mass or F=ma

Question 3

When an object is not moving all the forces are

Answer 3

Balanced

Question 4

When an object is moving but not accelerating

Answer 4

All forces are balanced and the net force equals zero

Question 5

When there is air resistance the objects net force is

Answer 5

Less than its weight

Question 6

The air resistance of an object depends on what 2 factors

Answer 6

The surface area (frontal area)
And
The speed of the object

Question 7

If acceleration equals gravity then?

Answer 7

The object is in free fall

Question 8

When acceleration is less than gravity what is present

Answer 8

Friction

Question 9

When acceleration is less than gravity, gravity ______

Answer 9

Decreases

Question 10

When there is terminal velocity what is present

Answer 10

Friction

Question 11

When acceleration is equal to gravity _______ increases as time goes on

Answer 11

Velocity

Question 12

Impulse

Answer 12

Product of force and this time interval

Question 13

Momentum

Answer 13

P=mv

Kg m/s

Question 14

Decreasing momentum over a long time will?

Answer 14

Make smaller force results

Question 15

Newtons 3rd law

Answer 15

Every object that exerts a force on an object the second object will exert an equal and opposite force on the object that applied the force to it

Question 16

The more mass an object has the ______ it accelerates

Answer 16

Slower

Question 17

An object with the least mass is going to _____the fastest

Answer 17

Accelerate

Question 18

How do resultant vectors compare to the weight of a ball

Answer 18

Same but opposite direction

Question 19

If the forces are equal the net force is

Answer 19

Zero

Question 20

If a force is exerted on a object but not enough to move it friction is

Answer 20

Equal too the pull

Question 21

Constant velocity mean acceleration is at

Answer 21

Zero

Question 22

When acceleration equals gravity the object is in

Answer 22

Free fall

Question 23

When acceleration is equal to zero there is

Answer 23

No movement or no acceleration

Question 24

Force

Answer 24

Push or pull that acts on an object

Question 25

When acceleration is less that gravity velocity _____

Answer 25

Increases